Home / 154,198.21-212,729.07-120,147.58

Finding the Fourth Proportional to 154,198.21, 212,729.07 and 120,147.58

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Solution

The fourth proportional to 154,198.21, 212,729.07 and 120,147.58 is: 165,753.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,198.21 : 212,729.07 = 120,147.58 : x
  2. Step 2: Convert to fraction form
    154,198.21/212,729.07 = 120,147.58/x
  3. Step 3: Cross multiply
    154,198.21x = 212,729.07 × 120,147.58
  4. Step 4: Simplify right side
    154,198.21x = 25,558,883,222.06
  5. Step 5: Solve for x
    x = 25,558,883,222.06/154,198.21
  6. Step 6: Final answer
    x = 165,753.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.